CVE-2026-33523: Apache HTTP Server: multiple modules: HTTP response splitting forwarding malicious status line
Overview
- Severity
- Medium (CVSS 6.5)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-May
- Released
- 2026-05-07
- Last Updated
- 2026-05-15
- EPSS Score
- 0.44% (percentile: 34.7%)
Affected Products (2)
Open Source Software
- cbl2 httpd 2.4.66-1 on CBL Mariner 2.0
- azl3 httpd 2.4.66-1 on Azure Linux 3.0
Revision History
- 2026-05-07: Information published.
- 2026-05-15: Information published.